Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7769f26a48812330e28df019b8b97557bc5bdd581e383b9c79ec10895ff9175a' 
  AND token = 'diNKIZAl1Xxqe5FxGEHdk7TgW5lLBq5S0izjpK0Qm9M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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