SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    9765, 6876, 70243, 9950, 9951, 35876, 
    67447, 9952, 10004, 31002, 32922, 34523, 
    35857, 67448, 69929, 69930, 69959, 
    69964
  )

Query time 0.00063

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "8.39"
    },
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "idx_products_inventory"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 18,
      "rows_produced_per_join": 18,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "6.60",
        "eval_cost": "1.80",
        "prefix_cost": "8.40",
        "data_read_per_join": "93K"
      },
      "used_columns": [
        "product_id",
        "kl_erp_inventory_id",
        "product_code",
        "hsn_code",
        "product_type",
        "status",
        "company_id",
        "list_price",
        "amount",
        "kl_enable_qc",
        "kl_qc_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",
        "is_stock_split_by_warehouses",
        "master_product_id",
        "master_product_status",
        "master_product_offers_count",
        "youtube_link",
        "show_youtube_video",
        "replace_main_image",
        "position_youtube",
        "restrict_cod",
        "seo_content"
      ],
      "attached_condition": "(`cscart_db`.`cscart_products`.`product_id` in (9765,6876,70243,9950,9951,35876,67447,9952,10004,31002,32922,34523,35857,67448,69929,69930,69959,69964))"
    }
  }
}

Result

product_id kl_erp_inventory_id product_code hsn_code product_type status company_id list_price amount kl_enable_qc kl_qc_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 is_stock_split_by_warehouses master_product_id master_product_status master_product_offers_count youtube_link show_youtube_video replace_main_image position_youtube restrict_cod seo_content
6876 WELLBEG1 21069099 P A 13 499.00 552 0 0 0.000 0 0 0 0.00 0 1644900056 1772690482 0 N N N B N R Y N N Y 10 0 N 0 5 0 0 11 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
9765 SLOWBURN 21069099 P A 13 1399.00 163 0 0 0.000 0 0 0 0.00 0 1649840298 1772690482 0 N N N B N R Y N N Y 10 0 N 0 5 0 0 11 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
9950 NUTACV250 3304 P A 13 300.00 999 0 0 0.000 0 0 0 0.00 0 1650354387 1772690482 0 N N N B N R Y N N Y 10 0 N 0 5 0 0 13 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
9951 NUTACV500 3304 P A 13 550.00 1000 0 0 0.000 0 0 0 0.00 0 1650354387 1772690482 0 N N N B N R Y N N Y 10 0 N 0 5 0 0 13 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
9952 NUTHHRT250 3304 P A 13 525.00 1000 0 0 0.000 0 0 0 0.00 0 1650354387 1772690482 0 N N N B N R Y N N Y 10 0 N 0 5 0 0 13 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
10004 NUTBKLOILCP60 3304 P A 13 580.00 46 0 0 0.000 0 0 0 0.00 0 1650354387 1772690482 0 N N N B N R Y N N Y 10 0 N 0 5 0 0 13 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
31002 GB_51 3304 P A 13 835.00 200 0 0 0.000 0 0 0 0.00 0 1685174910 1772692240 0 N N N B N R Y N N Y 10 0 N 0 5 0 0 13 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
32922 8908019719000 3304 P A 13 1999.00 28 0 0 0.000 0 0 0 0.00 0 1691735561 1772690482 0 N N N B N R Y N N Y 10 0 N 0 5 0 0 13 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
34523 HO_LCarnitine_60Tabs 21069099 P A 13 1022.00 50 0 0 0.000 0 0 0 0.00 0 1695474210 1772692240 0 N N N B N R Y N N Y 10 0 N 0 5 0 0 11 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
35857 8906132693467 21069099 P A 13 699.00 15 0 0 500.000 0 0 0 0.00 0 1706077449 1772692240 0 N N N 1 N R Y N N Y 10 0 N 0 5 0 0 11 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
35876 8906132696659 21069099 P A 13 1398.00 13 0 0 1000.000 0 0 0 0.00 0 1706077449 1772692240 0 N N N 1 N R Y N N Y 10 0 N 0 5 0 0 11 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
67447 SW-01 21069099 P A 13 625.00 1498 0 0 40.000 0 0 0 0.00 0 1750406764 1772690482 0 N N N B N R Y N N Y 10 0 N 0 0 0 0 11 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
67448 LU-01 21069099 P A 13 625.00 1500 0 0 40.000 0 0 0 0.00 0 1750406764 1772690482 0 N N N B N R Y N N Y 10 0 N 0 0 0 0 11 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
69929 CTUF10 21069099 P A 13 699.00 100 0 0 0.000 0 0 0 0.00 0 1767355111 1772690482 0 N N N N N N N Y 10 0 N 11 N 0 0 N 0 A 0 Y N
69930 CTUF20 21069099 P A 13 1499.00 100 0 0 0.000 0 0 0 0.00 0 1767355111 1772690482 0 N N N N N N N Y 10 0 N 11 N 0 0 N 0 A 0 Y N
69959 GM_SB_15 21069099 P A 13 700.00 50 0 0 0.000 0 0 0 0.00 0 1768203052 1772692240 0 N N N N N N N Y 10 0 N 11 N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
69964 GM_SB_30 21069099 P A 13 1400.00 50 0 0 0.000 0 0 0 0.00 0 1768203052 1772692240 0 N N N N N N N Y 10 0 N 11 N 0 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N
70243 90200684 21061000 P A 13 1399.00 13 0 0 0.000 0 0 0 0.00 0 1771578236 1772692240 0 N N N B N R N N N Y 10 0 N 0 0 0 0 11 N 0 P F default a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} 0 N 0 A 0 Y N