Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95599b7201ca51c314848efab386e1740e9de3a4e98c7114768dee5418ef74b8' 
  AND token = 'EJfGbx1f/9nMSHz8mOUzZeVsBAzWhKQiC3b1ucoFAS4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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