UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6xOt9WVUwWJRoES/le7AoC7iz4Z59dTqIhnWw7Vg0PI=' 
WHERE 
  key_id = '48ad524377ccb92649d0d2fef38ab083bdc5e4554154b4793c815c42658fa821' 
  AND (
    token = '6xOt9WVUwWJRoES/le7AoC7iz4Z59dTqIhnWw7Vg0PI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )