Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'fa98ddd8fa992d89f39300a42ed81c445c3b48fc0ef7e5b8a4bd478f6933d6ca' 
  AND token = 'ARYzlp2QHcnSxXch5hIZfSnVkPlcescCWa7K0vMyvFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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