Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09c64fea7e7e8657215099c45dcf2d1cd3c49f03366effbd677db2ef084ffa52' 
  AND token = 'oz5Lemgl6jzigavJJBdTgI8O/d2aCaOHPskhYHnBc5U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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