SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e226d51022d1011d18a3ab619c7b324dc1b62598103ba70d99e4b9e5ab14038' 
  AND token = 'HpTnnnAtwI8hCVA2Bq/vMJU/cRahFj5zH4Kim+FVBDg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00089

JSON explain

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