UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'U4gq1ieNwim9WdIb6/ZZVJjbvV497gZK6ajg+rSChOs=' 
WHERE 
  key_id = 'a5794a38a46ed8c2aa555f583af98ad44cdcae2e4663b4b4f1047cf0203bb0f9' 
  AND (
    token = 'U4gq1ieNwim9WdIb6/ZZVJjbvV497gZK6ajg+rSChOs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )