Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '183dda1344eaad24e15bb946619c1f2223602285c61af01d4e99af64e1e49e79' 
  AND token = 'jyE4KLP7nRElPT+KoWKtFs7XkHflnXlmjsZPOwV33cA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}