Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f094c7eccb424e602bcfd481072e0417bbac9ade2795890da82c85b7a54ca91' 
  AND token = 'O5f8Ep87Q+8f9sy8/FCRboSff/EOpzk/Gdc/ReYkPao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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