Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24aa63f4030500b0baa1ccb0b08fd9088af93acaaced29492ca4b5dc753a4695' 
  AND token = 'BRtL+a4xr/48lnxgVl9Tn+QsGQSRalsa2MM4Lt9Fnng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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