Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cfc4f4cd219c9405baebff0e7e8e90fa9dc9b128cfcd60a19c49606272574e98' 
  AND token = 'hhqzZ2RzKo9M0XvTL27RQvsogxrnz5FJHpUI+hrSOhw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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