Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6babf981be1916ab990b74e66d1afe7f55918ca675db2cb25f9d0534b90810b3' 
  AND token = 'HXb4ykiOcMNsL9hK4XVmM+PZ4E9V4boLSR1Gf8rz2uo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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