Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f32d2c2c1b7d85161a279064f5b48fc33638f4fbf67c0810fc383efe413d11b9' 
  AND token = 'OYyWuVuUkPbxhwXVuBnojQ6YOMQoUWpUQ2BrbWym8e0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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