Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2248e79ca2bfe270e1ccbd0ccf1e76997288d3c2d71cfb33e4931601ae5e4f94' 
  AND token = 'swlG0J9BlpJ+g9sK/0H7yoI76o+yOXPrGG6lPst7sMM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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