Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22f64dd5861d3e5e97a2b5a4a18da494531745bc1b20409379c2e829dfcd856b' 
  AND token = 'bR7EaEaGh74GVxiJS0IGOfLXbsbLCEckb1VcAd5cEIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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