UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '/M6yzApTr6L8CdPgIl4FzbRV+Jlmf0KqVNtI5EKBKOc=' 
WHERE 
  key_id = '251d5d4d1d34c6cc90faa1eb1f14fa3176bf6a254731c920851f8ee0e6ea51ee' 
  AND (
    token = '/M6yzApTr6L8CdPgIl4FzbRV+Jlmf0KqVNtI5EKBKOc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )