Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f4622e123176f2529dc7efbff955d7a5f4544896e87e460e7113cdd2050dee86' 
  AND token = 'iyghtEhtY0WZSdEbQTKMxwn42eFgopphGdng7b1zk7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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