Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dbba3a609cfa95c048fc1fdfae328dc9d3b8ccbbadefdee7f2b835399f369816' 
  AND token = 'Ep7pLHdTS+S9oKirLMDKr02MWt2YYXEZOkmGR9QGseA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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