Is there an equal sign with wider gap?

Here's a proposal:

\documentclass{article}
\usepackage{amsmath,xparse}

\ExplSyntaxOn
\NewDocumentCommand{\uneq}{}
 {
  \mathbin{\mathpalette\updraft_uneq:nn {}}
 }

\dim_new:N \l__updraft_width_dim
\dim_new:N \l__updraft_height_dim

\cs_new_protected:Nn \updraft_uneq:nn
 {
  \vcenter
   {
    \mathsurround=0pt
    \hbox:n
     {
      % measure the width of the equals sign in the current style
      \hbox_set:Nn \l_tmpa_box {$#1{=}$}
      \dim_set:Nn \l__updraft_width_dim { \box_wd:N \l_tmpa_box }
      % measure the width of 1mu in the current style
      \hbox_set:Nn \l_tmpa_box {$#1\mkern1mu$}
      \dim_set:Nn \l__updraft_height_dim { \box_wd:N \l_tmpa_box }
      % start drawing
      \driver_draw_begin:
      % round caps on lines
      \driver_draw_cap_round:
      % set the line width (change 1.2 to your liking)
      \driver_draw_linewidth:n { 1.2\l__updraft_height_dim }
      % 1. cm fonts use width/10  of side bearings
      % 2. the gap between lines is 5 times the line width
      % bottom line
      \driver_draw_moveto:nn
       { 0.1 \l__updraft_width_dim }
       { -2.5 \l__updraft_height_dim }
      \driver_draw_lineto:nn
       { 0.9 \l__updraft_width_dim }
       { -2.5 \l__updraft_height_dim }
      \driver_draw_stroke:
      % top line
      \driver_draw_moveto:nn
       { 0.1 \l__updraft_width_dim }
       { 2.5 \l__updraft_height_dim }
      \driver_draw_lineto:nn
       { 0.9 \l__updraft_width_dim }
       { 2.5 \l__updraft_height_dim }
      \driver_draw_stroke:
      \driver_draw_end:
      % occupy the space
      \hspace{ \l__updraft_width_dim }
     }
   }
 }
\ExplSyntaxOff

\begin{document}

$\mathbin{=}A$

$\uneq A$ $\scriptstyle\uneq A$ $\scriptscriptstyle\uneq A$

$A=B$

\end{document}

There is no “unary operator” class, one has to use \mathbin and TeX will act according to the context. You could also decide to simply use \mathord.

The gap can be tweaked by changing the 4\LMpt.

\documentclass{article}
\usepackage{scalerel,stackengine,bm}
\newcommand\bineq{\mathbin{\ThisStyle{\ensurestackMath{\vcenter{\hbox{\stackengine{%
  4\LMpt}{\SavedStyle\bm{-}}{\SavedStyle\bm{-}}{O}{c}{F}{F}{L}}}}}}}
\begin{document}
${\bm{=}} A\quad\scriptstyle{\bm{=}} A\quad\scriptscriptstyle{\bm{=}} A$ bold =

$\bineq A\quad\scriptstyle\bineq A\quad\scriptscriptstyle\bineq A$ \verb|\bineq|
\end{document}