Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f73496f92f2003cf301bc95609380e660a2c147d51e2ac407cce917cac35e618' 
  AND token = 'HWJbViOr2EvycO8UIF6mG8qJJUrcK6w5a4WN8IT8eto=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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