SELECT 
  (
    CASE WHEN products.parent_product_id <> 0 THEN products.parent_product_id ELSE products.product_id END
  ) AS product_id, 
  descr1.product as product, 
  companies.company as company_name, 
  cscart_supplier_links.supplier_id, 
  GROUP_CONCAT(
    products.product_id 
    ORDER BY 
      products.parent_product_id ASC, 
      products.product_id ASC
  ) AS product_ids, 
  GROUP_CONCAT(
    products.product_type 
    ORDER BY 
      products.parent_product_id ASC, 
      products.product_id ASC
  ) AS product_types, 
  GROUP_CONCAT(
    products.parent_product_id 
    ORDER BY 
      products.parent_product_id ASC, 
      products.product_id ASC
  ) AS parent_product_ids, 
  products.product_type, 
  products.parent_product_id, 
  products.master_product_offers_count, 
  products.master_product_id, 
  products.company_id 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
  LEFT JOIN cscart_supplier_links ON cscart_supplier_links.object_id = products.product_id 
  AND cscart_supplier_links.object_type = 'P' 
  LEFT JOIN cscart_product_sales ON cscart_product_sales.product_id = products.product_id 
  AND cscart_product_sales.category_id = products_categories.category_id 
  LEFT JOIN cscart_product_features_values AS pfv_62 ON pfv_62.product_id = products.product_id 
  AND pfv_62.feature_id = 62 
WHERE 
  1 
  AND (
    companies.status IN ('A') 
    OR products.company_id = 0
  ) 
  AND products.company_id IN (13, 0) 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND products.master_product_status IN ('A') 
  AND (
    1 
    AND pfv_62.variant_id IN (58065, 47988, 27559, 54064)
  ) 
GROUP BY 
  product_id 
ORDER BY 
  cscart_product_sales.amount desc, 
  products.product_id ASC 
LIMIT 
  0, 1

Query time 0.00299

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "194.06"
    },
    "ordering_operation": {
      "using_filesort": true,
      "grouping_operation": {
        "using_temporary_table": true,
        "using_filesort": true,
        "buffer_result": {
          "using_temporary_table": true,
          "nested_loop": [
            {
              "table": {
                "table_name": "pfv_62",
                "access_type": "range",
                "possible_keys": [
                  "PRIMARY",
                  "variant_id",
                  "product_id",
                  "fpl",
                  "idx_product_feature_variant_id",
                  "fl"
                ],
                "key": "variant_id",
                "used_key_parts": [
                  "variant_id",
                  "feature_id"
                ],
                "key_length": "6",
                "rows_examined_per_scan": 286,
                "rows_produced_per_join": 286,
                "filtered": "100.00",
                "using_index": true,
                "cost_info": {
                  "read_cost": "29.87",
                  "eval_cost": "28.60",
                  "prefix_cost": "58.47",
                  "data_read_per_join": "11K"
                },
                "used_columns": [
                  "feature_id",
                  "product_id",
                  "variant_id",
                  "lang_code"
                ],
                "attached_condition": "(((`cscart_db`.`pfv_62`.`feature_id` = 62) and (`cscart_db`.`pfv_62`.`variant_id` in (58065,47988,27559,54064))) and (`cscart_db`.`pfv_62`.`product_id` is not null))"
              }
            },
            {
              "table": {
                "table_name": "products",
                "access_type": "eq_ref",
                "possible_keys": [
                  "PRIMARY",
                  "status",
                  "idx_parent_product_id"
                ],
                "key": "PRIMARY",
                "used_key_parts": [
                  "product_id"
                ],
                "key_length": "3",
                "ref": [
                  "cscart_db.pfv_62.product_id"
                ],
                "rows_examined_per_scan": 1,
                "rows_produced_per_join": 14,
                "filtered": "5.00",
                "cost_info": {
                  "read_cost": "71.50",
                  "eval_cost": "1.43",
                  "prefix_cost": "158.57",
                  "data_read_per_join": "74K"
                },
                "used_columns": [
                  "product_id",
                  "product_type",
                  "status",
                  "company_id",
                  "usergroup_ids",
                  "parent_product_id",
                  "master_product_id",
                  "master_product_status",
                  "master_product_offers_count"
                ],
                "attached_condition": "((`cscart_db`.`products`.`company_id` in (13,0)) and ((`cscart_db`.`products`.`usergroup_ids` = '') or (0 <> find_in_set(0,`cscart_db`.`products`.`usergroup_ids`)) or (0 <> find_in_set(1,`cscart_db`.`products`.`usergroup_ids`))) and (`cscart_db`.`products`.`status` = 'A') and (`cscart_db`.`products`.`master_product_status` = 'A'))"
              }
            },
            {
              "table": {
                "table_name": "descr1",
                "access_type": "eq_ref",
                "possible_keys": [
                  "PRIMARY",
                  "product_id"
                ],
                "key": "PRIMARY",
                "used_key_parts": [
                  "product_id",
                  "lang_code"
                ],
                "key_length": "9",
                "ref": [
                  "cscart_db.pfv_62.product_id",
                  "const"
                ],
                "rows_examined_per_scan": 1,
                "rows_produced_per_join": 14,
                "filtered": "100.00",
                "cost_info": {
                  "read_cost": "8.22",
                  "eval_cost": "1.43",
                  "prefix_cost": "168.22",
                  "data_read_per_join": "65K"
                },
                "used_columns": [
                  "product_id",
                  "lang_code",
                  "product"
                ]
              }
            },
            {
              "table": {
                "table_name": "companies",
                "access_type": "eq_ref",
                "possible_keys": [
                  "PRIMARY"
                ],
                "key": "PRIMARY",
                "used_key_parts": [
                  "company_id"
                ],
                "key_length": "4",
                "ref": [
                  "cscart_db.products.company_id"
                ],
                "rows_examined_per_scan": 1,
                "rows_produced_per_join": 14,
                "filtered": "100.00",
                "cost_info": {
                  "read_cost": "3.58",
                  "eval_cost": "1.43",
                  "prefix_cost": "173.23",
                  "data_read_per_join": "99K"
                },
                "used_columns": [
                  "company_id",
                  "status",
                  "company"
                ],
                "attached_condition": "<if>(found_match(companies), ((`cscart_db`.`companies`.`status` = 'A') or (`cscart_db`.`products`.`company_id` = 0)), true)"
              }
            },
            {
              "table": {
                "table_name": "cscart_supplier_links",
                "access_type": "ref",
                "possible_keys": [
                  "object_id"
                ],
                "key": "object_id",
                "used_key_parts": [
                  "object_id",
                  "object_type"
                ],
                "key_length": "7",
                "ref": [
                  "cscart_db.pfv_62.product_id",
                  "const"
                ],
                "rows_examined_per_scan": 1,
                "rows_produced_per_join": 14,
                "filtered": "100.00",
                "index_condition": "<if>(is_not_null_compl(cscart_supplier_links), (`cscart_db`.`cscart_supplier_links`.`object_id` = `cscart_db`.`pfv_62`.`product_id`), true)",
                "cost_info": {
                  "read_cost": "3.58",
                  "eval_cost": "1.43",
                  "prefix_cost": "178.23",
                  "data_read_per_join": "228"
                },
                "used_columns": [
                  "supplier_id",
                  "object_id",
                  "object_type"
                ]
              }
            },
            {
              "table": {
                "table_name": "products_categories",
                "access_type": "ref",
                "possible_keys": [
                  "PRIMARY",
                  "pt"
                ],
                "key": "pt",
                "used_key_parts": [
                  "product_id"
                ],
                "key_length": "3",
                "ref": [
                  "cscart_db.pfv_62.product_id"
                ],
                "rows_examined_per_scan": 1,
                "rows_produced_per_join": 15,
                "filtered": "100.00",
                "using_index": true,
                "cost_info": {
                  "read_cost": "8.37",
                  "eval_cost": "1.60",
                  "prefix_cost": "188.20",
                  "data_read_per_join": "255"
                },
                "used_columns": [
                  "product_id",
                  "category_id"
                ]
              }
            },
            {
              "table": {
                "table_name": "cscart_categories",
                "access_type": "eq_ref",
                "possible_keys": [
                  "PRIMARY",
                  "c_status",
                  "p_category_id"
                ],
                "key": "PRIMARY",
                "used_key_parts": [
                  "category_id"
                ],
                "key_length": "3",
                "ref": [
                  "cscart_db.products_categories.category_id"
                ],
                "rows_examined_per_scan": 1,
                "rows_produced_per_join": 0,
                "filtered": "5.00",
                "cost_info": {
                  "read_cost": "3.99",
                  "eval_cost": "0.08",
                  "prefix_cost": "193.79",
                  "data_read_per_join": "2K"
                },
                "used_columns": [
                  "category_id",
                  "usergroup_ids",
                  "status",
                  "storefront_id"
                ],
                "attached_condition": "(((`cscart_db`.`cscart_categories`.`usergroup_ids` = '') or (0 <> find_in_set(0,`cscart_db`.`cscart_categories`.`usergroup_ids`)) or (0 <> find_in_set(1,`cscart_db`.`cscart_categories`.`usergroup_ids`))) and (`cscart_db`.`cscart_categories`.`status` in ('A','H')) and (`cscart_db`.`cscart_categories`.`storefront_id` in (0,1)))"
              }
            },
            {
              "table": {
                "table_name": "cscart_product_sales",
                "access_type": "eq_ref",
                "possible_keys": [
                  "PRIMARY",
                  "pa"
                ],
                "key": "PRIMARY",
                "used_key_parts": [
                  "category_id",
                  "product_id"
                ],
                "key_length": "6",
                "ref": [
                  "cscart_db.products_categories.category_id",
                  "cscart_db.pfv_62.product_id"
                ],
                "rows_examined_per_scan": 1,
                "rows_produced_per_join": 0,
                "filtered": "100.00",
                "cost_info": {
                  "read_cost": "0.20",
                  "eval_cost": "0.08",
                  "prefix_cost": "194.06",
                  "data_read_per_join": "12"
                },
                "used_columns": [
                  "category_id",
                  "product_id",
                  "amount"
                ]
              }
            }
          ]
        }
      }
    }
  }
}