Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb7e1d4e57703097bb79c35cc0be29ada6cc1cbcd13fc96254d8e0f86e73fe66' 
  AND token = '2df3wzHBexfVfOSW5ni/b0SC1WaWld4CqrveYeCMwRs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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