SELECT 
  product_id, 
  amount 
FROM 
  cscart_warehouses_sum_products_amount 
WHERE 
  1 
  AND product_id IN (
    398, 500, 146, 147, 148, 759, 149, 150, 
    151, 152, 153, 3
  )

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.0110178,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_warehouses_sum_products_amount",
          "access_type": "ALL",
          "possible_keys": ["PRIMARY"],
          "loops": 1,
          "rows": 1,
          "cost": 0.0110178,
          "filtered": 100,
          "attached_condition": "cscart_warehouses_sum_products_amount.product_id in (398,500,146,147,148,759,149,150,151,152,153,3)"
        }
      }
    ]
  }
}