Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66e55dd63a3bade36a50eaed7d7168a2dc6f4a20e1306efb511f2abf60d13013' 
  AND token = 'fdTwUBqsTMj3Q5YroEv8HyPauhizWDXZo3A7S2Yxlj4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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