Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97c06e55d4015183dd41493f8b5f5fc5da7cb77b162dec98284adf2b70e9cedf' 
  AND token = 'VCLKIf8gCpnQi7PvXtE6pAX2fAwgN6xfwDE1FSuBA40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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