Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bee5b5ff1b7afdf741a430eed2f1c489e16824929bc17d52aac4de8ec7f53576' 
  AND token = '073bA6YKHqtXGykiL/Iq/bc9fA6pchStuGEVCFMthHQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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