Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '046ceb95843c89eca0e30bddce06332e9cd246db53826ac78825bce0ffeeddb0' 
  AND token = '/JJMchgOOu8gfKBA2g8FYFeKScORXqSHPEsVuJNfH64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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