Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48475ba41fedfb4bde249d1285950bebca7577e8e052c1127ec9d9b303e11c33' 
  AND token = 'VghJod2QkppsyHCCAm5jji+nOAAeClBd+93tNBucyuQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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