Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73238c3cab6fa838c5dc463d1cfaa8736c0381550125b2c4497ca218e628665c' 
  AND token = 'prBz6+wxZKJYv70OD6MaUy9Ou1SnQwH1USO8kGUhGBo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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