UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'D+dvMD4NxQLl+UtDswd6twvL3+pmP6BetwbcPJURYLo=' 
WHERE 
  key_id = '638ebb96a7253528a371f11c784b5f3e5d495e15e8048bad91103e52634daffb' 
  AND (
    token = 'D+dvMD4NxQLl+UtDswd6twvL3+pmP6BetwbcPJURYLo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )