Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '956c64e93d26f26017373a48dbb973b12f010279cea62e4d7ca8e8fab9de79bb' 
  AND token = 'kSXl6+1AZbEK490Ui/csy+jEIuB1qq1ePEsoPIrYD/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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