Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20781fb81c087f9e1eb4534b6fa64b4bff98de01ce86586bc076e94c9ea0118c' 
  AND token = '/wVSTitBAhIHkv+4TZpT9bH4YLaMjxH2esXqdGo7yNE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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