Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd92f744fef11f9df656d7924cceae5e23b3e30b39cd5a66005ff076c870bf64' 
  AND token = '7dBDMSuKady86m8g4rvt8EkBkBPOnUQaCTTT+hF747o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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