Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ab906ee57bff78869b7f5ef93547d896a1fe0e7e7c310160a9a08fc59652efe0' 
  AND token = 'EwJhC5GxHe53sVcQdkvyHRkPP7XqCfQsem8ZRRVVn1k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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