Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ebfd9edb11a84a6a3e41c474ed823587b4bcb2f88ebdda23b7dc71a6820ede2' 
  AND token = 'yq3lc2qUuXfboY62ZgBVWxLvfXRklR6L2fdqzINyG2U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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