UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'gQi27xmkkEMwtc9drz6exNvjk012FzbDnr8vh9UjTQA=' 
WHERE 
  key_id = '91e194e8674f4471a8120d7330792b19355e7c537458f3b3e2abc188271ccd81' 
  AND (
    token = 'gQi27xmkkEMwtc9drz6exNvjk012FzbDnr8vh9UjTQA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )