Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa702e2dc8f91bb264db0ac1612b3d049e5b8cdfaa5defae0350f01699342b5c' 
  AND token = '23Mdd2wHXFR0CvkaT0P4D5x7bVz8qm2+qLqZBgaFicA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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