UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mU0AjYK9bf77nNnH2bnqFPQrHPtYrDVv2fIYcgPLD9c=' 
WHERE 
  key_id = '6f8359f62241b60412868d2e244082bf1e5cd8794d8a3a662fcfc1bf7b6cf256' 
  AND (
    token = 'mU0AjYK9bf77nNnH2bnqFPQrHPtYrDVv2fIYcgPLD9c=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )