Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6273255b249cdc5e1c6631e97ebe9977783794782fcfd76d6d13d9cd530a5030' 
  AND token = '0nZm3UaP4tNe0XBh8lNxrKH0ckdQsCcxtAi7unOtgQI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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