Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64c639c8e1d0d2b45e96892cb43f68b15be9a9912dbb4e7e4cf541a46a9a289c' 
  AND token = 'd+21n4m1hjOvJX3yydNGrvvUVntIqKSLOJWD1XnpZNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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