UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'zxc8kkvELPTUA8EYFsGmQhkWPk6kQsjnE6vXtKptBxw=' 
WHERE 
  key_id = 'a68996422aaca23a9bde5ce2b5746499b1f9e5ccc3114fd6e90287f3cda4474a' 
  AND (
    token = 'zxc8kkvELPTUA8EYFsGmQhkWPk6kQsjnE6vXtKptBxw=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )