Keyboard shortcuts in the Query Tool:

Execute  -->   Ctrl + Shift + E
Explain  -->    Ctrl + Shift + X
Explain analyze  -->   Ctrl + Shift + A

web/pgadmin/tools/datagrid/templates/datagrid/index.html

@@ -61,7 +61,7 @@ body {
             </select>
           </div>
           <div class="btn-group" role="group" aria-label="">
-            <button id="btn-flash" type="button" class="btn btn-default" style="width: 40px;" title="{{ _('Execute/Refresh') }}">
+            <button id="btn-flash" type="button" class="btn btn-default" style="width: 40px;" title="{{ _('Execute/Refresh (Ctrl+Shift+E)') }}">
               <i class="fa fa-bolt" aria-hidden="true"></i>
             </button>
             <button id="btn-query-dropdown" type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
@@ -70,12 +70,12 @@ body {
             <ul class="dropdown-menu dropdown-menu">
               <li>
                 <a id="btn-explain" href="#">
-                  <span>{{ _('Explain') }}</span>
+                  <span>{{ _('Explain (Ctrl+Shift+X)') }}</span>
                 </a>
               </li>
               <li>
                 <a id="btn-explain-analyze" href="#">
-                    <span>{{ _('Explain analyze') }}</span>
+                    <span>{{ _('Explain analyze (Ctrl+Shift+A)') }}</span>
                 </a>
               </li>
               <li class="divider"></li>

web/pgadmin/tools/sqleditor/templates/sqleditor/js/sqleditor.js

@@ -175,7 +175,8 @@ define(
         "click #btn-explain-costs": "on_explain_costs",
         "click #btn-explain-buffers": "on_explain_buffers",
         "click #btn-explain-timing": "on_explain_timing",
-        "change .limit": "on_limit_change"
+        "change .limit": "on_limit_change",
+        "keyup": "keyAction"
       },
 
       // This function is used to render the template.
@@ -1010,6 +1011,25 @@ define(
             self,
             self.handler
         );
+      },
+
+      // Callback for keyboard event
+      keyAction: function(ev) {
+        if(ev.ctrlKey && ev.shiftKey) {
+          if(ev.keyCode == 69) {
+            // char e/E
+            // Execute query.
+            this.on_flash(ev);
+          } else if(ev.keyCode == 88){
+            // char x/X
+            // Explain query.
+            this.on_explain(ev);
+          } else if(ev.keyCode == 65) {
+            // char a/A
+            // Explain analyze query.
+            this.on_explain_analyze(ev);
+          }
+        }
       }
     });