Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96ba084e63794577cc60fec898a5cd99b5f3e40d07c13f43ca893f886c2688dd' 
  AND token = 'R06cBw4yhRikmSbCOBFpQCZZg1eBJ4un5STBN4xly1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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