Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1454b68bdeaf8381c6168d40799d848a7d85a18f796954a6a9b91a8113d110a' 
  AND token = '2i8YNg1Twe1qtf8O1T2zRYHAGQj8RjdzM9vG/S/rhsI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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