UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'zexgak8qU/5PbfMReWZ7N7Y385bNwD7zEPXeuJmNhf8=' 
WHERE 
  key_id = '51072b7a69bcc45cf5b177486340e2bee1a384f65c65352f501c408328f7a9b0' 
  AND (
    token = 'zexgak8qU/5PbfMReWZ7N7Y385bNwD7zEPXeuJmNhf8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )