\documentclass[tikz,border=6pt]{standalone}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,positioning,calc}
\definecolor{ink}{HTML}{111827}
\definecolor{slow}{HTML}{B45309}
\definecolor{fast}{HTML}{2563EB}
\definecolor{paper}{HTML}{FFFDF7}
\begin{document}
\begin{tikzpicture}[>=Latex, font=\small, text=ink]
  \fill[paper] (-0.4,-1.4) rectangle (9.2,1.8);
  \draw[->, ink!70] (0,0) -- (8.7,0) node[right] {tiempo};
  \draw[slow, line width=1.1pt] (0.8,0.55) -- (7.9,0.55);
  \draw[fast, line width=1.1pt] (0.8,-0.55) -- (3.2,-0.55);
  \draw[slow, dashed] (7.9,0.25) -- (7.9,0.85);
  \draw[fast, dashed] (3.2,-0.85) -- (3.2,-0.25);
  \node[anchor=west, slow, font=\bfseries] at (0.85,0.92) {esperar $\Delta$};
  \node[anchor=west, fast, font=\bfseries] at (0.85,-0.98) {avanzar con $\delta$};
  \node[align=left, font=\footnotesize] at (5.8,-0.95) {camino feliz: el lider correcto\\ progresa al ritmo real de votos};
  \node[align=left, font=\footnotesize] at (5.8,1.2) {modelo pesimista: esperar\\ el peor timeout conocido};
\end{tikzpicture}
\end{document}
