Most Efficient Way To Write A Select Random Rows SQL Query

Here’s a quiz, which of the following would be more efficient and take less time to perform?

SQL Query 1

SELECT * FROM products WHERE id >= RAND() * (SELECT MAX(id) FROM products) LIMIT 20

SQL Query 2

SELECT * FROM products ORDER BY RAND() LIMIT 20

I’ve published the results here (tested on MySQL). 2 runs were conducted and they both proved that the first SQL query was more efficient.

Comments welcomed.