UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '18yCTGNClHR0iW3mIGfe1jBn5DMnwC0GsFEXgqFLJxA=' 
WHERE 
  key_id = '5bdb0860c03ce2251899aa3f527c0ed94505bbf683696ee63777e1b560b9db58' 
  AND (
    token = '18yCTGNClHR0iW3mIGfe1jBn5DMnwC0GsFEXgqFLJxA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )