Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ac687d687ffadc671dce50e91523767aa3db681bb6a7410a3f1352e05859085' 
  AND token = 'KZu2K/VjQadzODH2AE1NP+J0xlPwJ8I7BQ9BSBuUNNc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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