UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'DS4Yc0bjQLzU63g4AjcgwpWvt/8KgBBEVkdWjFU04rg=' 
WHERE 
  key_id = '51c8180c043f8afbf080867273f765c665728c5f378daabaf9286514c5fb5f37' 
  AND (
    token = 'DS4Yc0bjQLzU63g4AjcgwpWvt/8KgBBEVkdWjFU04rg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )