UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xevzgtINS95YDSX9j8/m6M70pXgPDUwotJnJqOFEjFk=' 
WHERE 
  key_id = '90a26e44cd59278723899afe51dce44fb720db6c50b3c836fe32fca4e96eee50' 
  AND (
    token = 'xevzgtINS95YDSX9j8/m6M70pXgPDUwotJnJqOFEjFk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )