Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be320917e7b79069e920f7069b3d2520a045a49d4b39aafcb1724c572c8e5a87' 
  AND token = 'LAQ3ExrwVIlesfG+44hNUsq9CBTUkc8oyfxQGCqSXlQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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