Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc125b8b6df3ae74b6ca746329c3c908dc455e8e8ce5c702dcea649145a5e651' 
  AND token = 'I7vG5P9svUR64mGWHSp46W8YidL4d2tG3Zhtwx+gEW8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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