Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7faae8e24951505c297a4fb2893996c5e6fdddd274af2192ca1e29e83c02cb82' 
  AND token = 'Z4QFyc75JREHAQYk2/YxZEPAqiNET/DwThtIcCOfEvI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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