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SELECT 
  product_id, 
  amount 
FROM 
  cscart_warehouses_sum_products_amount 
WHERE 
  1 
  AND product_id IN (
    732, 731, 727, 725, 724, 723, 809, 810, 
    720, 718, 717, 716, 715, 713, 709, 708, 
    707, 705, 701, 697, 696, 695
  )

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "Impossible WHERE noticed after reading const tables"
  }
}