Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46833daced076beb530dc72b3e08c3cf4e78dde5794b742f4b426e2e810ce4a6' 
  AND token = 'YuikOtyu+UWhpE9+R8QfW8gpN/GP2hium1BGg803Z/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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