UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xtZU4+KHgMZyMde2giUVbxOtlmt72feAE/MucCe79EI=' 
WHERE 
  key_id = '0c6303e7f3da2000d8769bda97a604b2af6dc6bf96ec4b34a0a758bc301ba8c2' 
  AND (
    token = 'xtZU4+KHgMZyMde2giUVbxOtlmt72feAE/MucCe79EI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )