UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'L7ERaynKlkcgZHeIuBYyfrZSoIBsoNdGcifn921f6mQ=' 
WHERE 
  key_id = '999e6f148bd84bd997c949f193a87f795698419ceec4e388603e5e8fe633829e' 
  AND (
    token = 'L7ERaynKlkcgZHeIuBYyfrZSoIBsoNdGcifn921f6mQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )