Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d16c8e3fc13ae94dd70b1d67ef23b9d46617c2698f1cbd352226e4e6e594405' 
  AND token = 'JsKjED5NXCdP+DGepVjA9UILhbOecAWT6KVUOx9tp6Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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