Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '939858f615ed8830bae3098eed5c086be8ec5d634dbf8a8ac043a64a117ec854' 
  AND token = '1qXx9LvLnQDHN4wWT4cxD2iN7em/TcjXOvF2Mnj5efA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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