Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd48db17ceab59ca68ad96db1264514283ab0ea972415c505d7edc671bf6ef25' 
  AND token = 'yJrVJ0Sp2MJcQWGtyY8j6WaRgfqza4p08kJYgOyz44E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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