UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MDuvSvm+B8XcXjjgJjckn8ehW9PjiSKtC9O+5eI6RR0=' 
WHERE 
  key_id = '495add8e721c296906bb630976424b6bb91ecc15d48b8dca4d0c2964a3e646cd' 
  AND (
    token = 'MDuvSvm+B8XcXjjgJjckn8ehW9PjiSKtC9O+5eI6RR0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )