Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95e7602b6146cb3da977171afa16e4e8501ca6d7ce02d4fa853c472ef3ddc1f4' 
  AND token = 'N+bdOdX77uo77tyIdHuDdmCk7k22YOV0kqS861b/670=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}