Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41e5ffc8d7e583f52d158620ef4f0a515ba2501dd94bc3b55d5baabfa579aa79' 
  AND token = 'BBsjc6CjAOkW4mbqXrMuOWdNosGFpDi/tTx9Behe/Ps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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