Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61c2bbaece061d071c6bc79363d206e4ed652c1fc9d58b37158c85c5552e8e06' 
  AND token = 'ZSZNwLcycML+i9G/NlHntmZkfpTShedp7Pc7t2jfXt0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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