UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'D5635soBMx2M4eLTu1BG865MlQRhg2F5mRAN6efYnPo=' 
WHERE 
  key_id = 'c66e72083f8044f62ed2a5431363691121cd4b98709b56511c80f5272661e79b' 
  AND (
    token = 'D5635soBMx2M4eLTu1BG865MlQRhg2F5mRAN6efYnPo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )