Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49fc6ed85bbadac3d544073f310c9b6ac7f0331312857575f78405e3b5da732a' 
  AND token = 'QAfhKYXGKlPFGiVA9FsAl32BaShiNNZbn2yqE2Lv93I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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