Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad68cac1408fa101986fa358abdc31d4a4f8e8d84a1f324485e81f2a7abd6779' 
  AND token = 'rmmRZlGDZZMUFaF0H7Hz2tYMvsCb76Nnc4ZhcCugClo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}