SELECT 
  product_id 
FROM 
  cscart_product_popularity 
WHERE 
  product_id IN (
    11278, 11277, 11276, 11275, 11274, 11273, 
    11272, 11271, 11270, 11269, 11268, 
    11267, 11266, 11265, 11264, 11263, 
    11262, 11261, 11260
  )

Query time 0.00070

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "4.15"
    },
    "table": {
      "table_name": "cscart_product_popularity",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "total"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 19,
      "rows_produced_per_join": 19,
      "filtered": "100.00",
      "using_index": true,
      "cost_info": {
        "read_cost": "2.25",
        "eval_cost": "1.90",
        "prefix_cost": "4.15",
        "data_read_per_join": "608"
      },
      "used_columns": [
        "product_id"
      ],
      "attached_condition": "(`gaseus`.`cscart_product_popularity`.`product_id` in (11278,11277,11276,11275,11274,11273,11272,11271,11270,11269,11268,11267,11266,11265,11264,11263,11262,11261,11260))"
    }
  }
}