UPDATE 
  vi_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'rL5uMptwDHEJd9XIMxh2Z30ztcOaeUGunELbn0klkfU=' 
WHERE 
  key_id = '491b917374c6400a372283ddf25c31c6bd4908145c6845e54662b6d6e504a19e' 
  AND (
    token = 'rL5uMptwDHEJd9XIMxh2Z30ztcOaeUGunELbn0klkfU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )