Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '835bcabab5cb0ad83a0a8930ac491932df59220da2b16764318bfc32900e250a' 
  AND token = 'TKUtSdF9yBDGtseSsiOhlR+PWbo8BezMG3/3bPPCuP0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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