如何将两个列连接起来进行搜索--sequelize？

const { Sequelize, Model, DataTypes, Op } = require('sequelize');

// 创建Sequelize实例
const sequelize = new Sequelize('database', 'username', 'password', {
  host: 'localhost',
  dialect: 'mysql'
});

// 定义模型
class User extends Model {}
User.init({
  username: DataTypes.STRING,
  email: DataTypes.STRING
}, { sequelize, modelName: 'user' });

// 连接数据库并执行查询
(async () => {
  try {
    // 同步模型到数据库
    await sequelize.sync();

    // 查询并连接两个列
    const users = await User.findAll({
      where: {
        [Op.and]: [
          { username: 'John' },
          { email: 'john@example.com' }
        ]
      }
    });

    console.log(users);
  } catch (error) {
    console.error('Unable to connect to the database:', error);
  }
})();