SELECT 
  jmj_products.* 
FROM 
  jmj_products 
WHERE 
  jmj_products.product_id IN (
    938, 939, 942, 943, 944, 945, 946, 947, 
    948, 949, 951, 952, 953, 954, 956, 958, 
    960, 962, 963, 965, 967, 968, 969, 970, 
    972, 973, 974, 975, 976, 977, 978, 979, 
    980, 981, 984, 985, 986, 987, 988, 989, 
    990, 991, 992, 993, 994, 995, 996, 997
  )

Query time 0.01068

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "115.21"
    },
    "table": {
      "table_name": "jmj_products",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 48,
      "rows_produced_per_join": 48,
      "filtered": "100.00",
      "index_condition": "(`jmj_test`.`jmj_products`.`product_id` in (938,939,942,943,944,945,946,947,948,949,951,952,953,954,956,958,960,962,963,965,967,968,969,970,972,973,974,975,976,977,978,979,980,981,984,985,986,987,988,989,990,991,992,993,994,995,996,997))",
      "cost_info": {
        "read_cost": "105.61",
        "eval_cost": "9.60",
        "prefix_cost": "115.21",
        "data_read_per_join": "227K"
      },
      "used_columns": [
        "product_id",
        "product_code",
        "product_type",
        "status",
        "company_id",
        "list_price",
        "amount",
        "weight",
        "length",
        "width",
        "height",
        "shipping_freight",
        "low_avail_limit",
        "timestamp",
        "updated_timestamp",
        "usergroup_ids",
        "is_edp",
        "edp_shipping",
        "unlimited_download",
        "tracking",
        "free_shipping",
        "zero_price_action",
        "is_pbp",
        "is_op",
        "is_oper",
        "is_returnable",
        "return_period",
        "avail_since",
        "out_of_stock_actions",
        "localization",
        "min_qty",
        "max_qty",
        "qty_step",
        "list_qty_count",
        "tax_ids",
        "age_verification",
        "age_limit",
        "options_type",
        "exceptions_type",
        "details_layout",
        "shipping_params",
        "facebook_obj_type",
        "parent_product_id",
        "buy_now_url",
        "ab__stickers_manual_ids",
        "ab__stickers_generated_ids",
        "net_price",
        "hsn_number",
        "integer_in_full_description",
        "master_product_id",
        "master_product_status",
        "master_product_offers_count",
        "is_stock_split_by_warehouses",
        "brand_variant"
      ]
    }
  }
}