Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f5a05eabbce39005f576263fde0195270baa25fdcf82410b9824f1b296ab157' 
  AND token = 'UKsI/uQdHHZog9bc2iiQ2B5F4cp+N5aZdMxnFoJj8iQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}