UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '83JS+MUKLE526O9+17oR4zg04SInmx0wyU6vwzGrI78=' 
WHERE 
  key_id = '3ac368c4325ea21400e1deaa61d47b1adac8bfadf95d8f9fe369d87f0416e491' 
  AND (
    token = '83JS+MUKLE526O9+17oR4zg04SInmx0wyU6vwzGrI78=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )