Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96d7cbd139bc13f6465a78d0124a8a22986d315b92cf115da3fc07d37daf62e4' 
  AND token = 'jOg7DkdicmW4z5xWrBHMd7p7vs0JYXMMU2f3r2KTgqM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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