Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c474667f61df01051a9f162bb48763c07b6a4f517b9902111430ffb4574bf68' 
  AND token = 'rqdi1TR/t1hloQxlJirNwaeLvyKzoezWC5nRz7WJyTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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