Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25730e585ddd7d3d7fabfc51a7470d2beb9f9568e17d4c71fe7d61dfc6538029' 
  AND token = 'yL1CrMithCbmrWpI4cPQk5rgsWLcetGsFEPiiEssc7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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