Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8dcbebc6318270051b9b85b2bc3e59c517d82f2c0b17856967b1b71088a9bfcd' 
  AND token = '2V1fR5jFKClRT/ukU0bZ/salICyCk87q5lPKNEXh/nQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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