Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2deca02d60c93760e0d596a12988286e820d487c3f9258d931d7ebe18c0abfac' 
  AND token = 'WQlI1W1VIaeBTG9fKue60z1X3FmMOxg/LVprhuaP6BQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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