Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e524f08b42b69f0088e8b376b6dc840ae63851dfa6e96b6671b756221f8e80f' 
  AND token = 'z60b97xr1vS279Y1h3m7yoH4an+jyL9V5oZYOKyvPS0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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