Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20c2b8ac4d70ccfb0a0a8d893775d67de5d6bab4e37e75a45f5795d6d8179778' 
  AND token = 'voyoPAWbPeLDGz0vpsBKUmHuGD2KVZnfWGaXfKIWH2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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