Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb3e3c1c83ba100f88a3410cce905a816ddd8567b49a0c6844cb32918f228a42' 
  AND token = 'FE6FK04LGkYkAJjRve4pvjsgX1Kyh48ZgtpX5j0hI7c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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