Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58489be804498a3a94403a17a997f15453f4f0d08da9d81272139f1be990faae' 
  AND token = 'MIMIQpdQvUKBwxMrOVHxtDSvR8Llopezi809VGG9V1E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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