use Minitoc with KOMA-Script (scrbook)

Seems easier than I thought:

\documentclass{scrbook}

\usepackage{etoc, blindtext}
\newcommand{\chaptertoc}[1][Chaptertoc]{%
  \etocsettocstyle{\addsec*{#1}}{}%
  \localtableofcontents%
}


\begin{document}
\chapter{First Chapter}
\label{CLA:first-chapter}

\chaptertoc{}
\bigskip{}
\blindtext

\section{First section in first chapter}
\label{CLA:first-section-first}
\blindtext

\section{Second section in first chapter}
\label{CLA:second-section-first}
And this section even has subsections:
\blindtext{}

\subsection{First subsec in second sec of first chapter}
\label{CLA:first-subsec-second}
\blindtext{}

\subsection{You know how to proceed}
\label{CLA:you-know-how}
\blindtext{}

\end{document}

First I tried to find out how to do that without the etoc package, because the tocbasic package, which is part of the KOMAscript bundle, surely provides the machinery. However, with etoc it seems fairly easy.