UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'DnaTxjfvPFJVseNbn1L2P0etBs85bzanPDiW31BgJmc=' 
WHERE 
  key_id = '17798c375874874111ce62bb0330c5516482a23dc322b1ed08b918144f45d15a' 
  AND (
    token = 'DnaTxjfvPFJVseNbn1L2P0etBs85bzanPDiW31BgJmc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )