Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '067cec76881464de3c29ce1b553d1688f5078cc3f3cd14a76cdea25dcf01a75a' 
  AND token = 'Zslw/3z1fck92hrFs9Vpl1hiA6gmZGP58CJsIvDAkVA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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