Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f150d3fa02d0aede5073a21f1ccd5ec657444399aeb668a06f3254166bcca55b' 
  AND token = 'hvg5Kh/1dSuo14c2kHu18DXoNjiG4qKNPQe4zSrfzXM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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