pyTelegramBotAPI/examples/asynchronous_telebot/skip_updates_example.py

from telebot.async_telebot import AsyncTeleBot

bot = AsyncTeleBot('TOKEN')

@bot.message_handler(commands=['start', 'help'])
async def send_welcome(message):
	await bot.reply_to(message, "Howdy, how are you doing?")

@bot.message_handler(func=lambda message: True)
async def echo_all(message):
	await bot.reply_to(message, message.text)

bot.polling(skip_pending=True)# Skip pending skips old updates