SELECT 
  product_id 
FROM 
  cscart_product_popularity 
WHERE 
  product_id IN (
    63491, 63490, 63489, 63488, 63487, 63486, 
    63485, 63484, 63483, 63482, 63481
  )

Query time 0.00058

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "2.51"
    },
    "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": 11,
      "rows_produced_per_join": 11,
      "filtered": "100.00",
      "using_index": true,
      "cost_info": {
        "read_cost": "1.41",
        "eval_cost": "1.10",
        "prefix_cost": "2.51",
        "data_read_per_join": "352"
      },
      "used_columns": [
        "product_id"
      ],
      "attached_condition": "(`cscartdb`.`cscart_product_popularity`.`product_id` in (63491,63490,63489,63488,63487,63486,63485,63484,63483,63482,63481))"
    }
  }
}