if call.data == 'check_pay':

print('123')
sql.execute('SELECT * FROM bills WHERE user_id = ?', (call.from_user.id,))
if sql.fetchone() != None:
bill = sql.execute('SELECT * FROM bills WHERE user_id = ?', (call.from_user.id,)).fetchone()[1]
price = sql.execute('SELECT * FROM bills WHERE user_id = ?', (call.from_user.id,)).fetchone()[2]
if crystal.get_pay_status(bill) == True:
print('yes')
balance = sql.execute('SELECT * FROM users WHERE user_id = ?', (call.from_user.id,)).fetchone()[1]
plus_balance = int(balance) + int(price)
sql.execute(f'UPDATE users SET balance = {plus_balance} WHERE user_id = {call.from_user.id}')
sql.execute(f'DELETE FROM bills WHERE user_id = ?', (call.from_user.id,))
db.commit()
await bot.send_message(call.from_user.id, f'Новое пополнение на {price} руб.')
if crystal.get_pay_status(bill) == False:
print('no')
await bot.send_message(call.from_user.id, f'Оплата не найдена!')
else:
print('nety')
keyboard = types.InlineKeyboardMarkup()
btn1 = types.InlineKeyboardButton(text='Проверить ещё раз', callback_data='check_pay')
keyboard.add(btn1)
await bot.send_message(call.from_user.id, f'Счетов на ваше имя не найдено!', reply_markup=keyboard)

@dp.message_handler(state=UserState.price)
async def create_bill(message: types.Message, state: FSMContext):
price = int(message.text)
comment = str(message.from_user.id) + '_' +str(random.randint(1000, 9999))
bill = crystal.create_invoice(amount=price, extra=comment)
sql.execute('INSERT INTO bills VALUES (?, ?, ?, ?, ?)', (message.from_user.id, bill.id, price, comment, 0))
db.commit()
keyboard = types.InlineKeyboardMarkup()
btn = types.InlineKeyboardButton(text='Оплатить', url=bill.url)
btn2 = types.InlineKeyboardButton(text='Проверить платёж', callback_data='check_pay')
keyboard.row(btn, btn2)
await bot.send_message(message.from_user.id, f'Счет на оплату создан!\n\n<b>Сумма</b>: {price} руб.\n<b>Комментарий</b>: {comment}', parse_mode='HTML', reply_markup=keyboard)
time.sleep(300)
if bill.if_paid():
print('123')
else:
sql.execute('DELETE FROM bills WHERE user_id = ?', (message.from_user.id,))
db.commit()
await bot.send_message(message.from_user.id, f'В течении 5 минут оплата не поступила, счет был удален!')

Подскажите пожалуйста, почему не работает кнопка

Залей на pastebin по-братски

https://pastebin.com/DkEiaee9