Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '841e6603136f265fe31d520bb27bcb054f6f2fc4fdcc786ace93aec255eeb38a' 
  AND token = 'frJaZOJVM7UyjlJvu4IkhuNKtktG9qens4FyXYT227k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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