Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd453dee6610d4b2b476f3e7c0950b1f94c8e97c23ea4bc0f6e5402121d8a413d' 
  AND token = 'bxLyWfAdJXhFPn0jIsifqzRO01pr161b/y91Eph/kAg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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