SELECT 
  product_id, 
  amount 
FROM 
  cscart_warehouses_sum_products_amount 
WHERE 
  1 
  AND product_id IN (
    51514, 51538, 51539, 51468, 51476, 51491, 
    51513, 51474, 51503, 51520, 51541, 
    51462, 51502, 51522, 51499, 51465, 
    51509, 51515, 51466, 51485, 51518, 
    51550, 51519, 51524, 51528, 51508, 
    51527, 51543, 51482, 51504, 51542, 
    51512, 51493, 51511, 51505, 51046, 
    51439, 51544, 51054, 51546, 51548, 
    51438, 51535
  )

Query time 0.00063

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "50.81"
    },
    "table": {
      "table_name": "cscart_warehouses_sum_products_amount",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "product_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 89,
      "rows_produced_per_join": 89,
      "filtered": "100.00",
      "index_condition": "(`test_uchur_k`.`cscart_warehouses_sum_products_amount`.`product_id` in (51514,51538,51539,51468,51476,51491,51513,51474,51503,51520,51541,51462,51502,51522,51499,51465,51509,51515,51466,51485,51518,51550,51519,51524,51528,51508,51527,51543,51482,51504,51542,51512,51493,51511,51505,51046,51439,51544,51054,51546,51548,51438,51535))",
      "cost_info": {
        "read_cost": "41.91",
        "eval_cost": "8.90",
        "prefix_cost": "50.81",
        "data_read_per_join": "1K"
      },
      "used_columns": [
        "product_id",
        "amount"
      ]
    }
  }
}