Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60f32ca1de56ac267c73efd49b113c0066b89401648a3f1c09f7cc14d21611e8' 
  AND token = '8lhzhiEhmaKNKZo9Fgzf+zYSNXCrTmfDSjE0vJdmjmc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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