Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2147713e18028416aa5e560f41ac7b1bda5bba9b103af6a225e01258d35922b3' 
  AND token = 'EtiuyvrOYzIg3U2yp/IcML0w7TdXDrj90EhyRSZoKhE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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