Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7bc3a3ac27243126834350bc58e8d8542863afcdf1e1656b9dcc4baea2154412' 
  AND token = 'O+jy3Tv88/OkMUJHrAwU90e2biUSUmXS+ksdJMyfPuw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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