What is the correct way to send a query to (database) and change the values?

Question

Node.js

Hello, please help me, am I doing the right thing in the database?

without it:

if(!this.spawnVirus){
     //Жду выполнение запроса (db.query)
       //возвращаю состояние (this.spawnVirus) на false;
      //запуск запроса один раз... 
      this.spawnVirus = true; 
}

Everything adds up quickly! the function itself (onLevel) works fine.
Am I doing the right condition for accrual (xp, max_xp, level, coins);

And with the condition, everything seems to be normal.