Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d32713ad57f0c61281f6d0c28610faeb583756abad4425ac9cfe856219c2c96' 
  AND token = 'GliKXcT68Q1vJJIrfb1FKYlXWJ+Ff43B/eHX0CeWj9w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}