How do I delay instantiating a prefab?

I have looked at many articles and I’m just very confused. I would like my coinPrefab to be instantiated after a 2 second delay once the “Is Being Opened” parameter in the Animator is set to true. I have attempted IEnumerator Coroutines but it feels very much over my head right now. Please help!

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Chest : MonoBehaviour {
	[SerializeField] private Rigidbody coinPrefab;
	[SerializeField] private Transform spawner;
	[SerializeField] private float delay = 3f;

	private Animator anim;
	private bool interactable = false;

	private void Start() {
		anim = GetComponent<Animator>();

	private void Update() {
		if(interactable && Input.GetKeyDown(KeyCode.Space)) {

	private void OnTriggerEnter(Collider other) {
		if (other.gameObject.tag == "Player")
			interactable = true;

	private void OnTriggerExit(Collider other) {
		if (other.gameObject.tag == "Player")
			interactable = false;

	private void OpenChest() {
		anim.SetBool("Is Being Opened", true);
		yield WaitForSeconds(2f);
		Rigidbody coinInstance = Instantiate(coinPrefab, spawner.position, spawner.rotation);

I’ll give you a beautiful answer: Timeout.

using System;

//This should be in a generic class like Utility, for example
public static void IEnumerator Timeout(Action action, float time) {
    yield return new WaitForSecondsRealtime(time);

And you call it like this:

    () => {
        //This will be the code executed