Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3258245e65c301cd769dc721a1fe58a8260851a1c8ae72b547594ec0f58f710' 
  AND token = 'wW3mwfNUMj/Vp8ivno/9ZEw/U92aGyr7loahS+IemRo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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