SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    2603, 3136, 2587, 2761, 2694, 3096, 2723, 
    2742, 3556, 2593, 3104, 2618, 2828, 
    2613, 2619, 2872, 2704, 3593, 4888, 
    3423, 5168, 2739, 3291, 2841, 5155, 
    3876, 2561, 3812, 5124, 2865, 2734, 
    3369, 3139, 5157, 2700, 5121, 5929, 
    2701, 2797, 6271, 5938, 4886, 4885, 
    8243, 5933, 8603, 10022, 8272, 7878, 
    8879, 7880, 8458
  )

Query time 0.00127

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "36.41"
    },
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 52,
      "rows_produced_per_join": 52,
      "filtered": "100.00",
      "index_condition": "(`softwarepirmam_hewadelivard_cscart_4`.`cscart_products`.`product_id` in (2603,3136,2587,2761,2694,3096,2723,2742,3556,2593,3104,2618,2828,2613,2619,2872,2704,3593,4888,3423,5168,2739,3291,2841,5155,3876,2561,3812,5124,2865,2734,3369,3139,5157,2700,5121,5929,2701,2797,6271,5938,4886,4885,8243,5933,8603,10022,8272,7878,8879,7880,8458))",
      "cost_info": {
        "read_cost": "31.21",
        "eval_cost": "5.20",
        "prefix_cost": "36.41",
        "data_read_per_join": "229K"
      },
      "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",
        "units_in_product",
        "show_price_per_x_units",
        "ab__stickers_manual_ids",
        "ab__stickers_generated_ids"
      ]
    }
  }
}