Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '844548b5776a52caf1acff98d7e6bf7894466fa8f88924c35d3ba9cc6d662399' 
  AND token = 'IDgiitNj0Nca98NsatVDqyjHAUh0Fasw3r4fqhGQKTY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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