Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a8d23b8c63c24ee298f978953ae1754ea16173cd87a322433db125dd3859fd4e' 
  AND token = 'fJkN2G4oFF2IRc7GOjgBbWfAdjP7a9AKwW/AP5k+38I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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