Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10dcf9b4054b2120b5ab2f5195429085461b34406ff8c8179a007f9a939eb47f' 
  AND token = 'yu8mCdv/6z5uFw5btqSUkWVJKO8K74k66/V+rDfbiZo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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