Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8b7cd6311c112e892e510b6e5f1f780ec6736c51808883f276624709c6f9560' 
  AND token = 'mJwx7hVXkBfsWhzWHK3HUXspbO8h7bm24pS2yg1CFg0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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