Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2801a5e1d56b16c642f70545b6101b7070132a77269feb086aaf97882dd37e8' 
  AND token = '3Adl4hFfuzA9sGCmZJ7Y7CDfXRDGJ6cOQBX78bCbMmk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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