Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65f0854c6d70c595f04acb5541685ad39e53510b43d2587df2848baec846763d' 
  AND token = 'PA14SDwGzwMt6S//IZSBQIHb99phMMl8kAVpZJ4KMbA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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