Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05ed924f8280040a6daf47545e23a603755f382c6fa7c67670e0566d9bafa80d' 
  AND token = 'XEh0WAazFQ7p/prMGa39c6VMGXzF8THMoxSG4SPtCgQ=' 
  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"
    }
  }
}