Sandbox

SELECT 
  products.product_id, 
  products.list_price, 
  prices.price, 
  products.amount, 
  descr1.product as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id, 
  products.company_id, 
  prpd.average_rating, 
  prpd.reviews_count, 
  pvd.variant as brand_name, 
  ab.amount as co_purchase_count 
FROM 
  cscart_also_bought_products ab 
  INNER JOIN cscart_products as products ON products.product_id = ab.related_id 
  AND products.status = 'A' 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  LEFT JOIN cscart_product_review_prepared_data AS prpd ON prpd.product_id = products.product_id 
  LEFT JOIN cscart_product_features_values AS pfv ON pfv.product_id = products.product_id 
  AND pfv.feature_id = 62 
  LEFT JOIN cscart_product_feature_variant_descriptions AS pvd ON pfv.variant_id = pvd.variant_id 
  AND pvd.lang_code = 'en' 
WHERE 
  ab.product_id = 6876 
  AND ab.amount >= 2 
  AND products.parent_product_id = 0 
  AND (
    products.amount > 0 
    OR products.tracking = 'D'
  ) 
GROUP BY 
  products.product_id 
ORDER BY 
  ab.amount DESC 
LIMIT 
  8

Query time 0.00172

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "61.23"
    },
    "ordering_operation": {
      "using_filesort": true,
      "grouping_operation": {
        "using_temporary_table": true,
        "using_filesort": false,
        "nested_loop": [
          {
            "table": {
              "table_name": "ab",
              "access_type": "ref",
              "possible_keys": [
                "PRIMARY"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "const"
              ],
              "rows_examined_per_scan": 189,
              "rows_produced_per_join": 62,
              "filtered": "33.33",
              "cost_info": {
                "read_cost": "1.15",
                "eval_cost": "6.30",
                "prefix_cost": "20.05",
                "data_read_per_join": "1007"
              },
              "used_columns": [
                "product_id",
                "related_id",
                "amount"
              ],
              "attached_condition": "(`cscart_db`.`ab`.`amount` >= 2)"
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "age_verification",
                "status",
                "idx_parent_product_id",
                "idx_master_product_id",
                "youtube_link",
                "idx_products_parent_lookup",
                "idx_products_status_company",
                "idx_products_master_status",
                "idx_products_inventory",
                "idx_products_status_company_master",
                "idx_products_main_query",
                "idx_products_query_opt",
                "idx_products_composite_query",
                "idx_kl_qc_enabled"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "cscart_db.ab.related_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 3,
              "filtered": "5.43",
              "cost_info": {
                "read_cost": "19.97",
                "eval_cost": "0.34",
                "prefix_cost": "46.31",
                "data_read_per_join": "17K"
              },
              "used_columns": [
                "product_id",
                "product_type",
                "status",
                "company_id",
                "list_price",
                "amount",
                "tracking",
                "parent_product_id"
              ],
              "attached_condition": "((`cscart_db`.`products`.`parent_product_id` = 0) and ((`cscart_db`.`products`.`amount` > 0) or (`cscart_db`.`products`.`tracking` = 'D')) and (`cscart_db`.`products`.`status` = 'A'))"
            }
          },
          {
            "table": {
              "table_name": "descr1",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "product_id",
                "idx_product_desc_lang",
                "idx_product_name_search",
                "idx_product_desc_sort"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id",
                "lang_code"
              ],
              "key_length": "9",
              "ref": [
                "cscart_db.ab.related_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 3,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "2.81",
                "eval_cost": "0.34",
                "prefix_cost": "49.46",
                "data_read_per_join": "15K"
              },
              "used_columns": [
                "product_id",
                "lang_code",
                "product"
              ]
            }
          },
          {
            "table": {
              "table_name": "prices",
              "access_type": "ref",
              "possible_keys": [
                "usergroup",
                "product_id",
                "lower_limit",
                "idx_prices_discount_lookup",
                "idx_prices_min_calc",
                "idx_prices_usergroup_lookup"
              ],
              "key": "idx_prices_discount_lookup",
              "used_key_parts": [
                "product_id",
                "lower_limit"
              ],
              "key_length": "6",
              "ref": [
                "cscart_db.ab.related_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 3,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "0.86",
                "eval_cost": "0.34",
                "prefix_cost": "50.66",
                "data_read_per_join": "82"
              },
              "used_columns": [
                "product_id",
                "price",
                "lower_limit",
                "usergroup_id"
              ]
            }
          },
          {
            "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": 3,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.86",
                "eval_cost": "0.34",
                "prefix_cost": "51.86",
                "data_read_per_join": "23K"
              },
              "used_columns": [
                "company_id",
                "company"
              ]
            }
          },
          {
            "table": {
              "table_name": "prpd",
              "access_type": "ref",
              "possible_keys": [
                "PRIMARY"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "cscart_db.ab.related_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 6,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "1.08",
                "eval_cost": "0.68",
                "prefix_cost": "53.62",
                "data_read_per_join": "109"
              },
              "used_columns": [
                "product_id",
                "storefront_id",
                "average_rating",
                "reviews_count"
              ]
            }
          },
          {
            "table": {
              "table_name": "pfv",
              "access_type": "ref",
              "possible_keys": [
                "PRIMARY",
                "product_id",
                "fpl",
                "idx_product_feature_variant_id",
                "fl"
              ],
              "key": "idx_product_feature_variant_id",
              "used_key_parts": [
                "product_id",
                "feature_id"
              ],
              "key_length": "6",
              "ref": [
                "cscart_db.ab.related_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 8,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "4.03",
                "eval_cost": "0.82",
                "prefix_cost": "58.47",
                "data_read_per_join": "328"
              },
              "used_columns": [
                "feature_id",
                "product_id",
                "variant_id",
                "lang_code"
              ]
            }
          },
          {
            "table": {
              "table_name": "pvd",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "variant_id",
                "lang_code"
              ],
              "key_length": "9",
              "ref": [
                "cscart_db.pfv.variant_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 8,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "1.94",
                "eval_cost": "0.82",
                "prefix_cost": "61.23",
                "data_read_per_join": "61K"
              },
              "used_columns": [
                "variant_id",
                "variant",
                "lang_code"
              ]
            }
          }
        ]
      }
    }
  }
}

Result

product_id	list_price	price	amount	product	company_name	product_type	company_id	average_rating	reviews_count	brand_name	co_purchase_count
9108	699.00	629.10	339	Daily Probiotic + Prebiotic - 21 Tabs	Roadskye Tradecom Pvt. Ltd.	P	13	5.00	2	Wellbeing Nutrition	8
9126	1799.00	1619.10	996	Pure Korean Marine Collagen Peptides - Unflavoured - 200 gm	Roadskye Tradecom Pvt. Ltd.	P	13	4.70	23	Wellbeing Nutrition	5
9760	1399.00	1259.10	1645	Slow Multi + Omega for Her Multivitamin capsule for Women - 60 Capsules	Roadskye Tradecom Pvt. Ltd.	P	13	3.50	2	Wellbeing Nutrition	5
17319	699.00	538.23	393	Barrier Relief Lightweight Gel-cream Ceramide moisturizer for oily, dehydrated, acne prone and sensitive skin	Roadskye Tradecom Pvt. Ltd.	P	13	4.70	44	The FormulaRX	4
19215	899.00	809.10	28	Daily Fiber - Pina Colada Flavor - 30 Servings	Roadskye Tradecom Pvt. Ltd.	P	13			Wellbeing Nutrition	4
9121	599.00	539.10	1763	Restful Sleep Melts - 30 Oral Strips	Roadskye Tradecom Pvt. Ltd.	P	13	5.00	1	Wellbeing Nutrition	3
11169	975.00	711.75	43	Omega 3 Deep Sea Fish Oil Triple Strength - 60 Softgels	Roadskye Tradecom Pvt. Ltd.	P	13	4.71	7	Dr. Morepen	3
15179	599.00	539.10	392	Special Offer -Melts Hair Fall Control - 30 oral strips	Roadskye Tradecom Pvt. Ltd.	P	13	5.00	1	Wellbeing Nutrition	3