Generating HMAC-SHA256 Token in JavaScript to Match PHP Output

I am trying to call an API written in PHP that generates a token using the following method:

base64_encode(hash_hmac("sha256", "<api-key>", "<email>:<gmdate('y-m-d H')>"))

In JavaScript (Node.js), I attempted to generate the same token with this code:

import crypto from "crypto";

function generateToken(apiKey, email) {
  const timestamp = new Date().toISOString().slice(0, 13).replace("T", " ");
  const data = `${email}:${timestamp}`;

  const hash = crypto.createHmac("sha256", apiKey).update(data).digest("hex");
  return Buffer.from(hash).toString("base64");
}

// Example usage
const apiKey = "your-api-key";
const email = "[email protected]";
const token = generateToken(apiKey, email);

console.log(token);

However, the output of this function does not match the token generated by the PHP code, and I am unable to authenticate the API request.