The clerk of the court shall keep the jury box in his custody. The jury box must be kept securely locked with three separate and strong locks, each lock being different and distinct from the other two and requiring one key peculiar to itself in order to be unlocked. The key to one of these three locks must be kept by the county auditor himself, the key to another of these three locks must be kept by the county treasurer himself, and the key to the third of these three locks must be kept by the clerk of the court of common pleas himself, so that no two of them shall keep a similar key or similar keys to the same lock and so that all three of them must be present together at the same time and place in order to lock or unlock and open the jury box.