UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PBsGVAMZEO5z2oUyxs7csUs+fIcyTq8akbxSJzL+1do=' 
WHERE 
  key_id = '51e737c8b89e0f4eb024c3df2e409b9cb036f34befd5029da095a2a38121a66f' 
  AND (
    token = 'PBsGVAMZEO5z2oUyxs7csUs+fIcyTq8akbxSJzL+1do=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )