Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45e955d683862aa1e238ba84ebf4e41346347af67e1366b487d97f355a89c8d6' 
  AND token = 'M1iojbdMlGYhrMC+V6IUxRE0lp1GDmuX+AS8Vh5hEKA=' 
  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"
    }
  }
}