Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b24bf23cd0589aefbb5a6797ac702f038ecf01ab6161ce6f12006aa8d4138d8' 
  AND token = 'tEMPjVr/Qr6zirauuEvsYUlsAz78XXS0L9K4/CmbJLM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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