Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05e5d801445a9331bb50524af45310855eefb958603291eda8ef21addf736557' 
  AND token = 'O55GDDLwzM2PEsQcKm1WsVlswNkTndSxDa7dldSSTSM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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