SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'c7f4190c3777be99184cd10d1ca45b4990768a7b7dd993280466d77cb6172b60' 
  AND token = 'gezRrK9KWW2ZTOX0wVFf6/yHAtUvfp7FIp2JXWTGYjk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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