Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8591ca2802e69f398a40cef4801ed43a60c1b2fb1a7825f757f5c69a5c44b389' 
  AND token = 'Kd8b2iqasHIlT9gx7mcLbMMxsDfigGwdqzlg1DxOqMk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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