UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'U6hgHuITsm0GqqU6yjedpf8opmT1f7tMoj8k7C3aHMM=' 
WHERE 
  key_id = '4c971a1cff226bddfd2b62246cc37e0807973f0a6798435852f98fde9d11697d' 
  AND (
    token = 'U6hgHuITsm0GqqU6yjedpf8opmT1f7tMoj8k7C3aHMM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )