Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd2cd7b07f56d2144d8502af746ad78354c594227804e1478d744b550fe83300' 
  AND token = 'IwvSUY4l3242WPlWuP0t5BeD6vbphzYgVYrKTw7MP5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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