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Sample code

Long dataGMT = System.now().getTime() / 1000;
system.debug('dataGMT = ' + dataGMT);
String token = 'Q1' + dataGMT + 'Q2';
system.debug('token = ' + token);
System.debug(LoggingLevel.INFO, 'MD5Hash(token) === ' + MD5Hash(token));
public static String MD5Hash(String value) {
    return hash('MD5', value);
}

public static String hash(String algorithmName, String input) {
    return EncodingUtil.convertToHex(Crypto.generateDigest(algorithmName, Blob.valueOf(input)));
}

How to get 32-bit uppercase?

The result of the sample code is 32-bit lowercase.

result : d06f11aa4627092e03400fc27ab09908 ---(32-bit lowercase)

Expected result : D06F11AA4627092E03400FC27AB09908 ---(32-bit uppercase)

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What if you use MD5Hash(token).toUpperCase().

toUpperCase is a method in String which converts your string value to upper case.

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