Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3196228f1a77171c4ec4cc1fdaf8e441081d36ec82122c713ebdacb905f6845f' 
  AND token = 'pWPMjFpDNs3b2kh5bfm8lGhQnLutClZirqPuH01ac1s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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