Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a31b165f2a01de9b6c027f76f48b1237fd3dd7e379742b62d0bbd08a585b95d' 
  AND token = '2N1Y2mf9fry/pLgno8Ahgmpztpjn/Kif9ztEpSmyz9M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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