Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38cc87917acf28bde00581b2af9d1461a72da7d5f9eed2f83834657dc6665da2' 
  AND token = 'bUuBoC0orWzUb5K8vysLXZS8N8oKLYvp2rlHAG33+wo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}