NOTE: checking button states after X seconds (reset after certain time)

#define ledPin 12
#define buttonPin 4
#define buttonPin2 5

boolean ledState = LOW;
boolean btnPressed = false;
boolean btnPressed2 = false;

unsigned long myTime;
unsigned long myTime2;

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT);
  pinMode(buttonPin2, INPUT);
  digitalWrite(ledPin, LOW);

  myTime = -1000000;
  myTime2 = -1000000;
}

void loop() {
  boolean btnState = digitalRead(buttonPin);
  boolean btnState2 = digitalRead(buttonPin2);

  if (btnState == HIGH){
    btnPressed = true;
    myTime = millis();
    Serial.println(myTime);
  }
  
  if (btnState2 == HIGH){
    btnPressed2 = true;
    myTime2 = millis();
  }

  if(millis() > myTime + 2000){
    btnPressed = false;
  }

  if(millis() > myTime2 + 2000){
    btnPressed2 = false;
  }

  if (btnPressed == true && btnPressed2 == true){
    ledState = HIGH;
    digitalWrite(ledPin, HIGH);
    delay(20);
  } 
}