Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '463217200632d7c66784dc571e8ae0761f1252fbbbd4c253f5a5e7202afbf55d' 
  AND token = 'TQbFqFHfgvdcFRhuohMGobdo7a5y3jxNGAPYB88olko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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