Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6007436eaebae08d45e7d116cd6583c62ae32e3e8b2427445a788079062d4747' 
  AND token = 'adBxEVzm9o6Jyf9dDdYjo71bJUcZAyNKKZpzkK90Sq8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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