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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 = 66725 
  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 0.00129

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "17.06"
    },
    "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": 49,
              "rows_produced_per_join": 16,
              "filtered": "33.33",
              "cost_info": {
                "read_cost": "1.04",
                "eval_cost": "1.63",
                "prefix_cost": "5.94",
                "data_read_per_join": "261"
              },
              "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": 0,
              "filtered": "5.43",
              "cost_info": {
                "read_cost": "5.47",
                "eval_cost": "0.09",
                "prefix_cost": "13.04",
                "data_read_per_join": "4K"
              },
              "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": 0,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.60",
                "eval_cost": "0.09",
                "prefix_cost": "13.73",
                "data_read_per_join": "4K"
              },
              "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": 0,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "0.26",
                "eval_cost": "0.09",
                "prefix_cost": "14.08",
                "data_read_per_join": "21"
              },
              "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": 0,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.22",
                "eval_cost": "0.09",
                "prefix_cost": "14.39",
                "data_read_per_join": "6K"
              },
              "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": 1,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.26",
                "eval_cost": "0.18",
                "prefix_cost": "14.83",
                "data_read_per_join": "28"
              },
              "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": "PRIMARY",
              "used_key_parts": [
                "feature_id",
                "product_id"
              ],
              "key_length": "6",
              "ref": [
                "const",
                "cscart_db.ab.related_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 2,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "1.35",
                "eval_cost": "0.21",
                "prefix_cost": "16.39",
                "data_read_per_join": "82"
              },
              "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": 2,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.47",
                "eval_cost": "0.21",
                "prefix_cost": "17.06",
                "data_read_per_join": "15K"
              },
              "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
68137	220.00	154.00	50	Hydration Repair Mini Skincare Set Pack of 4	Roadskye Tradecom Pvt. Ltd.	P	13	4.80	15	Coxir	4
32144	1400.00	910.00	79	Spot the Difference Blemish Treatment - 15ml	Roadskye Tradecom Pvt. Ltd.	P	13			AXIS-Y	2
37263	1600.00	1120.00	575	Bio Collagen Deep Mask \| Pack of 4	Roadskye Tradecom Pvt. Ltd.	P	13	4.57	7	Biodance	2
37830	1960.00	1372.00	8799	Rice Extract \| Brightening & Hydration \| Face Toner \| 150ml	Roadskye Tradecom Pvt. Ltd.	P	13	4.86	51	I'm From	2
37876	3500.00	2450.00	39	Hydro Cera-nol Ampoule 50ml	Roadskye Tradecom Pvt. Ltd.	P	13			Biodance	2
65234	2250.00	1575.00	29	No.1 Pantothenic B5 Active Soothing Serum 50ml	Roadskye Tradecom Pvt. Ltd.	P	13			Numbuzin	2
65259	1890.00	1323.00	190	No.5 Vitamin-Glutathione Concentrated Toner Pad 180ml	Roadskye Tradecom Pvt. Ltd.	P	13	4.77	13	Numbuzin	2
65262	2050.00	1332.50	37	Cera-Heart My Type Duo Cream 60ml	Roadskye Tradecom Pvt. Ltd.	P	13			AXIS-Y	2