UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mhuFb6DflKgisI41amtHQOPmQOCgtKgvIVcunFaRq0M=' 
WHERE 
  key_id = '0200a38599ca4c5d6292975030b8afd757e8a56b4136c0502fe1d5c2419ecb52' 
  AND (
    token = 'mhuFb6DflKgisI41amtHQOPmQOCgtKgvIVcunFaRq0M=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )