instance method _find_record

# File activerecord/lib/active_record/persistence.rb, line 1153
    def _find_record(options)
      all_queries = options ? options[:all_queries] : nil
      base = self.class.all(all_queries: all_queries).preload(strict_loaded_associations)

      if options && options[:lock]
        base.lock(options[:lock]).find_by!(_in_memory_query_constraints_hash)
      else
        base.find_by!(_in_memory_query_constraints_hash)
      end
    end