Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95a9d5bb3f0000fd61392adcc7e95ef8eb27fd95d23e97846cafda160ffe1b15' 
  AND token = 'vS/ozq7zfB/moN3Tbgffz23Gg8dKrhmJ755gkUl3KkQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}