diff --git a/src/database.service.ts b/src/database.service.ts
index 32ee07b..172a8a1 100644
--- a/src/database.service.ts
+++ b/src/database.service.ts
@@ -60,9 +60,13 @@ export default class Database {
   }
 
   private parseKey(fullKey: string): { storeName: string; key: string } | null {
-    const parts = fullKey.split(':', 2);
-    if (parts.length !== 2) return null;
-    return { storeName: parts[0], key: parts[1] };
+    const colonIndex = fullKey.indexOf(':');
+    if (colonIndex === -1) return null;
+    
+    const storeName = fullKey.substring(0, colonIndex);
+    const key = fullKey.substring(colonIndex + 1);
+    
+    return { storeName, key };
   }
 
   /**