Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a5473028efb9e7a8a17d74f95aadca9a99d9b9123792f1cdad95bde7a6fb642' 
  AND token = 'KOCUdwlp8hoZTzz1IHxIiy12ghO+gZEiMPfcp7w8ucg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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