远程连接mysql非常慢

import mysql.connector
from sshtunnel import SSHTunnelForwarder

# SSH隧道配置
ssh_host = 'your_ssh_server'
ssh_port = 22
ssh_username = 'your_ssh_username'
ssh_password = 'your_ssh_password'

# MySQL数据库配置
mysql_host = '127.0.0.1'
mysql_port = 3306
mysql_user = 'your_mysql_username'
mysql_password = 'your_mysql_password'
mysql_database = 'your_mysql_database'

# 创建SSH隧道
with SSHTunnelForwarder(
    (ssh_host, ssh_port),
    ssh_username=ssh_username,
    ssh_password=ssh_password,
    remote_bind_address=(mysql_host, mysql_port)
) as tunnel:
    # 连接MySQL数据库
    conn = mysql.connector.connect(
        host='127.0.0.1',
        port=tunnel.local_bind_port,
        user=mysql_user,
        password=mysql_password,
        database=mysql_database
    )
    
    cursor = conn.cursor()
    cursor.execute("SELECT * FROM your_table")
    result = cursor.fetchall()
    print(result)
    
    cursor.close()
    conn.close()