Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a58e3771dfd6b40d117bc32e2861835717e6141252a83c452b24288920e53573' 
  AND token = '2ole/vBT6QtZrWo/OFse9en9QutpqUiHewgBAmxHX/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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