Statins certainly reduce sudden death.
The current advice is to consider statins if there is a 20% or greater 10-year risk of developing cardiovascular disease
(1). There is some evidence that statins reduce the incidence of sudden death by an effect unrelated to lowering lipids
(2). However, there is no evidence to suggest this is effective low-risk populations.
The real answer is a calcium score which if low effectively rules out coronary disease.
Even that isn't quite true. Even total coronary occlusion frequently occurs in the absence of any detectable calcification
(3).
The message is that predicting cardiac events in low-risk groups is very hard.