Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c42db27035536c0d06d38752eec0373c4f80f02bc853ab46927f8b665c2d55f' 
  AND token = 'kLwrR7nTS17UGmjq28ewWP4A8twsae0H9jhKOpTnHZo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00116

JSON explain

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