UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'iq8HL0zKYq9aG8XE7cZuUiVbRzAV1gNVPl0DbMAjuvI=' 
WHERE 
  key_id = '851f6231738198aa34eda6873073a4277b707a1d05d09912903a1f76c1676127' 
  AND (
    token = 'iq8HL0zKYq9aG8XE7cZuUiVbRzAV1gNVPl0DbMAjuvI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )