SELECT 
  product_id 
FROM 
  cscart_product_popularity 
WHERE 
  product_id IN (
    431543, 431544, 431545, 431546, 431547, 
    431548, 431549, 431550, 431551, 431677, 
    431678, 431679, 431680, 431681, 431682, 
    431683, 431684, 431685, 431686
  )

Query time 0.00079

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "8.63"
    },
    "table": {
      "table_name": "cscart_product_popularity",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY",
        "total"
      ],
      "key": "total",
      "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": "4.83",
        "eval_cost": "3.80",
        "prefix_cost": "8.63",
        "data_read_per_join": "608"
      },
      "used_columns": [
        "product_id"
      ],
      "attached_condition": "(`webmarco`.`cscart_product_popularity`.`product_id` in (431543,431544,431545,431546,431547,431548,431549,431550,431551,431677,431678,431679,431680,431681,431682,431683,431684,431685,431686))"
    }
  }
}