Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97ab192ab9a274a20ab590866f06edbe66cef84b35842e0293d87a2f7a9c7192' 
  AND token = 'ReQSuA7zJZB2uoXpWaq8tgDuoSCoK1jPebypBd/2FHg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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