Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60390d1ec76675864740957da77c601478ab34e0342906c369bbb25dbd4ca5ef' 
  AND token = 'RqQdMf4SVRxKXyzgP3t7ALT3J6RqC3SEPK7cke2L/RE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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