Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8871fdb28a89bf772e0c68c44e4672c35b58d4b19694462aafd57b3f7df9192b' 
  AND token = 'UdEzepxl3XcWYU4VmQawONxJCsMPrkkC36Wa4ufZQK8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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