UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'cVx2kiMqN5xF1pKSSOY0t0it2UGb/7BTalP2KrIE1GU=' 
WHERE 
  key_id = '257bbc60494134a9f3808a2dc04b3d576204b3c4edee58b59aafacdebae2273c' 
  AND (
    token = 'cVx2kiMqN5xF1pKSSOY0t0it2UGb/7BTalP2KrIE1GU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )