Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3089964689ce91ebf38218056a1b75e88baadff3fc95c6ecb6d781e59c4b8424' 
  AND token = 'rMv70Yb6Rf1IX3hz+S49ed+u1APFzTdEVwbLPA9+Jx0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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