Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3bb7aa8f30f06e18d63438c2a2af78ac05f88676582a9ab46a747f148b5e0997' 
  AND token = '/Qaan/cIYnkw6k7E72U8AVCbZWEJro1rsG3fGrwq5Oc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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