Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2565b7ed37e980726ed1b043a15f58dac833c301be6a824530af906f2c6569fc' 
  AND token = 'cCx9Mt+OHZxuXwMUiY97Gco1rFfeIUKafIuTHpKgxmk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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