SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (1620, 1619, 1624, 1681, 1680, 1902)

Query time 0.00075

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 6,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (1620,1619,1624,1681,1680,1902)"
    }
  }
}

Result

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 split_for_sale main_unit material_group stock_norm min_stock_level max_stock_level reorder_level safety_stock
1619 4513574030305 P A 1 0.00 0.000 0 0 0 0.00 0 1700622748 1734422409 0 N N N N N N N Y 10 0 N N 0 0 0.000 1.000 N G 0.000 0.000 0.000 0.000 0.000
1620 4973512259098 P A 1 0.00 0.000 0 0 0 0.00 0 1700628807 1734422409 0 N N N N N N N Y 10 0 N N 0 0 0.000 1.000 N G 0.000 0.000 0.000 0.000 0.000
1624 test-123456 P A 1 0.00 0.000 0 0 0 0.00 0 1701225235 1734422409 0 N N N N N N N Y 10 0 N N 0 0 0.000 1.000 N G 0.000 0.000 0.000 0.000 0.000
1680 4987176062642 P A 1 0.00 0.000 0 0 0 0.00 0 1703842464 1734422409 0 N N N N N N N Y 10 0 N N 0 0 0.000 1.000 N G 0.000 0.000 0.000 0.000 0.000
1681 4987176062482 P A 1 0.00 0.000 0 0 0 0.00 0 1703842317 1734422409 0 N N N N N N N Y 10 0 N N 0 0 0.000 1.000 N G 0.000 0.000 0.000 0.000 0.000
1902 4987176184726 P A 1 0.00 0.000 0 0 0 0.00 0 1727754140 1734422409 0 N N N N N N N Y 10 0 N N 0 0 0.000 1.000 N G 0.000 0.000 0.000 0.000 0.000