Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58ee96b75e7218e42158e9cac7e48a710af15a07109a07cb454609d1eb9a9467' 
  AND token = 'BuFVokxcC/9rSPWRdBPunS7hbP1bDpsfTGBAEYU9ggk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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