Looks like log level :debug is required for activerecord times to be tracked

config/environments/production.rb

@@ -40,7 +40,7 @@ Rails.application.configure do
 
   # Use the lowest log level to ensure availability of diagnostic information
   # when problems arise.
-  config.log_level = :info
+  config.log_level = :debug
 
   # Prepend all log lines with the following tags.
   config.log_tags = [ :request_id ]