Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec5d8477a994e640aa44b9c164cca84c07f767f4d3e43de946ecd501e6cbb13e' 
  AND token = 'arIWIPIZ4Q9zDacZXet/KRW1SeQk8PjJnF/UDPxroCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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